Cosmos Transaction Sender Script

This is a simple Bash script for sending multiple transactions on Cosmos SDK-based blockchains (e.g., Umee, Evmos, Gaia) using a specified binary. It supports logging, configurable delays, and customizable parameters via an external .env config file.

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⚙️ Features

• Sends a specified number of transactions
• Supports Cosmos SDK binaries (umeed, gaiad, evmosd, etc.)
• Fully configurable via config.env
• Logs transaction hashes and statuses with timestamps
• Automatically detects binary path via which

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📦 Requirements

• A valid Cosmos SDK binary installed and available in $PATH (e.g. umeed)
• jq installed (sudo apt install jq)
• Wallets and keys already set up via the binary
• Executable permission for send.sh

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🔧 Setup

1. Clone the repository

git clone https://github.com/yourusername/cosmos-tx-sender.git
cd cosmos-tx-sender

2. Create and edit the config.env file

# config.env

BINARY=umeed                        # Name of the binary (must be in PATH)
LOG=txs.log                         # Log file name
PWD=your_wallet_password            # Wallet password
TX_COUNT=10                         # Number of transactions to send
FROM_WALLET_ADDRESS=umee1...        # Sender wallet address
TO_WALLET_ADDRESS=umee1...          # Recipient wallet address
TX_AMOUNT=10000uumee                # Amount per transaction
DELAY=2                             # Delay in seconds between transactions
NODE_CHAIN=umee-1                   # Chain ID
TX_FEES=300uumee                    # Transaction fee

⚠️ Never commit your config.env file with sensitive data to a public repository.

3. Make the script executable

chmod +x send.sh

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🚀 Usage

./send.sh

The script will:

• Load configuration from config.env
• Validate all variables
• Locate the binary in your system
• Send each transaction with a delay
• Log each transaction result to the specified log file

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🧪 Example Log Output

[2025-06-07 14:01:22] ✅ TX 1: Sent successfully. Hash: A1B2C3...
[2025-06-07 14:01:25] ❌ TX 2: Failed to send. Response: {...}

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📁 Project Structure

cosmos-tx-sender/
├── send.sh         # Main script
├── config.env      # Configuration file (user-provided)
└── txs.log         # Output log file (auto-generated)

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🛡️ Disclaimer

This script is provided as-is with no warranty. Use at your own risk. Always test on a testnet before using on mainnet.

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📄 License

MIT License